Listed gear-ratio data for 1998 Suzuki 9.9 HP outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
1998 Suzuki 9.9 HP
Listed ratio values: 1.92:1, 2.08:1
| Model | Gear ratio |
|---|---|
| DF9.9 legacy 4-Stroke | 2.08:1 |
| DT9.9 legacy 2-Stroke | 1.92:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.